Jesse g



n J. G. vmcfm. HYDBOCARBN MOOB; APPLICATION IFILED AUG.30. 19.16.

Patented May 27, 1919;.

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'liz Memor:

Jesse 6 I tor vehicles and otherwise,

JESSE GVINCENT, OFDETRGIT,

Mronioiin, nssiairoa ro Packer@ Moron can COMPANY, 0F DETROIT, MICHTIGAN, A CORPORATION OF M1CHIGAH.

EYDROCARBON-EIIOTR.

specification of Letters Patent.

v Patented May 2*?, 11119..`

Application filed August 30, 1916. Serial No. 117,774.

To all whom t may 'concern Be it known that l, JESSE G. VINCENT, a

citizenof the United States, and resident of Detroit, Wayne county,

State of Michigan, have invented certain new and useful improvements in Hydrocarbon-Motors, of which the following is aspecificatlon.

This invention relates to hydrocarbon motors and particularly to means for supplying fuel thereto. y y

lin the use of hydrocarbon motors on moit is frequently necessary to arrangethefmain fuel supply tank at a point lower than the motor carbureter, whereby it becomes necessary to provide means, preferably operated by the motor, for drawing or forcing the gasolene or the fuel from the main supply tank to the carbureter. One well known means for raisingthe gasolene from the main tank to a smaller receptacle above the carburetor from which it may be fed to the ycarbureter by gravity, is a vacuum operated device in which the vacuum is supplied by the intake chamber of the moto however, that when this vacuum supply 1s depended upon to raise the gasolene to .a

Ahigher level the device sometimes fails if the motor is operated with wide open throttle continuously for some length of time. Under such conditions the vacuum in the intake chamber drops very materially and is therefore not sufficient under some conditions to operate the device above referred to.

If instead o-f using the vacuum in the intake chamber as above suggested, a vacuum pump is used to operate the device for raising the level of the gasolene, 1t will be found necessary, in motor vehicle use, to supply a hand operated pump also 1n order to raise the gasolene for starting the motor:

One of the objects of the present invention is to provide a vacuum operated device of the above description, with connections both to the motor intake chamber and to a-rnotor operated vacuum pump whereby a suitable vacuum is always obtainable, the pump supplyingthe vacuum when the vacuum 1n the intake chamber falls below a given point and the -intake chamber quickly supplying a vacuum for operating the device when the motor is-being turned over or cranked by hand or by the usual electric cranking dece. Another object of the invention is to `pro- It has been found,

vide a pump and valve unit of novel construction and arrangement.

Other objects of theinvention will appear from the following description'taken in connection with the Idrawings which'. form af' part of this'specification, and in which:

Figure 1 is a view showing part of ahydrocarbon motor adapted for motor vehicle use,` together .with a vacuum'operated device and' connections, all vof'vwhich go to illustrate one form of the invention.

Fig. 2 is an enlarged longitudinal sectional view of the pump and valve mechanism shown in F ig. 1, with the pump in a different position;

Fig. 3 is a transverse sectilon on the line 3-3 of Fig. 2;

Fig. L is alsection on the Fig. 2; and

Fig, 5`is an edge view of the disk used to form a dividing Wall in the pump barrel.

Referring to the drawings, 101 represents' generally a vacuum operated device of well known form, many of which are in general use on motor vehicles for-raising the gasolene in the main supply tankl to a higher` level above the motor-carbureter, so that the gasolene may be fed bygravity from said device to thecarbureter. The device `and its operation will be briefly described.

rihe device 10 is in the form of upper and lower tanks 11 and 12 respectively, a

line 4 4; of

e@ 13 havlng a flap valve 14C connecting the t- 4 tom of the upper lower compartment. 15 which leads from the lower compartment to the motor carbureter.

rihe upper compartment contains a float 16 which is connected to a lever 17 pivoted at 18 to an rarm 19 extending downwardly into the compartment. The gasolene'intake port is shown at 20. A lever 22 connected by a link 23 with the lever 17 above de scribed,- is pivoted at 24 as is also another lever 25, to which are connected alvalve 26 which controls valve 28 which controls the vent 29. This vent 29 opens into the upper compartment as shown and it is also connected to the lower compartment 12 by' a pipe 30. A spring 31 has its ends so connected to the' levers 22 and 251that a toggle action of .these levers is obtained. Thusthe spring yieldingly holds both of the levers 22 and 25 in the upper position in which they are shown compartment with the There is an outlet pipe 90 roo the vacuum port 27 and a `ret type.

lthe valve chamber cavo-convex. It is expanded This of course causes the float 16 to drop and through the lever 17 and link 23 it pulls the lever 22 down with it, thereby opening the port 27 and closing the vent 29. Thus the vacuum closed the flap valve 14 will be closed and the gasolene will be drawn into the upper compartment through the port 2Q.' As thei u" per compartment 11- fills up with gasolene tllb ioat 16 will be raised to the position in which it is shown in full lines in Fig. 1 and the operation will be repeatedas long as air is' exhausted through the port 27 and the gasolene is withdrawn from the lower compartment 12.

In the drawings, the vacuum operated device above described is connected to a hydro-carbon motor 32 of the well known V- This motor comprises the usual crank shaft 33, connecting rods 34, cylinders 35, cam shaft 36 driven from the crank shaft, intake header or chamber- 37, and carbureter 38. The` outlet pipe 15 from the lower compartment 12 of the device 10 is shownas connected to the carbureter 38 in themsu'al way.

Secured to one side of the motor 32 lis a vacuum pump 39 which has an eccentric or crank shaft 40 driven from the cam shaft 36 as by a pair of spiral gears 41.

This vacuum pump 3.9 is of novel construction and it combines with it or has formed. as a partof it a valve which is arranged in the connection between the motor intake chamber 37 and the vacuum operated device 10. The said connection comprises the pi es 42 and 43, the former of which runs rom the intake chamber 37 to the pump 39 and the latter lof which runs from the device 10 to said pump. The pipe 43 isv connected tothe device '10 at the vacuum port 27, as shown clearly in Fig. 1.

The barrel of the pump 39 is drilled with 'a through bore, the lower part of which forms the cylinderof the pump and the upper partv of which forms a valve chamber 44. The pump cylinder is divided from by an imperforate wall formed by a disk 45' expanded into an annulargroove 46 in the pump-barrel intermediate of ,its ends. An edge view of thisfdisk 45is' shown in Fig..5 and it will be seen that in its original-form it A,is substantially coninto the groove 46 b rhammer blows which straightenit out ass own in Fig..2.- n

. Av trunk piston 47 is arranged to travel in the pump c linder and is operated by a connectmg ro 48 and the eccentric. 40. The

port being open and the vent 29l piston is formed with an annular groove 49 which registers with an intake port 50 at one end of its stroke as shown in Fig.- 2, angl with an eutlet port 51 at the other end of its stroke as shown in Fig. 1.l A series of radial openings5-2 connect the interior of the piston and of the cylinder with the groove 49. It is believed that the operation of this vacuum pump will be obvious from the above description. The intake port 50 is connected 'with the pipe'l43 so that the pump will operate toA create a vacuum or partial vacuum in lthe upper compartment of the device 10.

A valve 53 is arranged in the chamber 44 and is spring pressed to its lower or closed position as by a spring 54. This valve has side walls formed with a groove 55 which registers with the port 56 only when the valve is in its raised position. Openings 57 extend from the groove' 55 to the interior of the valve. The port 56 is connected by a channel 58 with the pipe 43 as shown in Figs.

1 and 2. The pipe 42 is connected to the upper part of the valve chamber 44 abovev the valve 53 so that the vacuum in the intake chamberl 37 will tend to raise the valve 53 against the spring 54 to the position wj/hich it is shown in Fig. 2. When the vacuum releases the valve 53 it falls to the position shown in Fig. 1.

From the above description it will be seen that the valve53 is in the pipe connection between the `vacuum operated device 10 and the intake chamber 37 and that this valve is aected only by the vacuum or pressure on the intake chamber side of said valve, the vacuum or pressure on the other side of the valve having no tendency to change the position of the valve in any way.

It the motor has been standingand there is not suiicient gasolene in the compartment 12 of the device 10 `to start it, the motor n ,chamber 37 which will immediately raise the valve 53 to the position in which it is shown in Fig. 2, thereby opening communication between the pipes 42 and 43. This vacuum will immediately draw the gasolene from the main supply tank 59 through the pipe 60 and port 20 to the upper compartment 11 'of the device 10.l 'As `soon as said upper compartment is filled `the ioat and levers' inesaid device .will have moved from the position inf which they are shown ink dotted lines tothe position 'in which they are shown in full lines in Fig. 1 and the gasolene in the 'upper compartment will `flow vinto the lowerI compartment, from which renace? 39 will be very limited, whereas the tively large pistons ot the motor will create a considerable vacuum in the intake cham/ ber 37. After the motor starts however both the vacuum pum 39 and the intake chamber 37 will act slmultaneously under ordi-, nary conditions to operate the device 10. if the motor throttle is now closed or nearly so, with the motor still running, the vacuum will be raised in the chamber 37 and-that vacuum will be largely used to operate the device 10. On the other hand, 'if theV motor is run for any length of time with wide, open throttle, and particularly if under heavy load and fairly good speed so that considerable gasolene is used, the vacuum in the chamber 37 will be inadequate to operate the device 10, but the vacuum pump 39 Will take up the work and continue to keep the carbureter supplied with sufficient fuel. :When the vacuum pump is thus called upon to do the greater part of the work the valve 53 is closed so that the. action of the pum'l will not be interfered with by the relative Ay low vacuum in the intake chamber 37, and like- Wise the operation ofthe pump will not affect the functioning of the motor by reducing the vacuum in the intake chamber. It will be understood that other forms of the invention and various changes and alterations may be made, within the scope of the claims, without departing from the inveny tion.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. The combination with a hydrocarbon motor having a carbureter and intake chamber, of a vacuum operated device for supplying gasolene to the carbureter, a vacuum pump connected to the motor to be continuously operated thereby, means for communieating the pump and intake chamber with the vacuum operated device, and means operated by a predetermined vacuum in the intake chamber for opening the communication between the intake chamber and the vacuum operated device.

rela- 2. The combination with a hydrocarbon motor having a carbureter and intake chamber, of a vacuum operated device for supplying gasolene to the carbureter, a vacuum pump connected to the motor to be continuously operated thereby, meansior communicating the pump and intake chamber with the vacuum operated device, and a valve operated by a predetermined vacuum in the intake chamber for opening the communication between the intake chamber and the vacuum operated device. l

3. The combination with a hydrocarbon motor having chamber, of a vacuum operated device for supplying gasolene to the carbureter, a connection from said device to the intake chamber, and a valve in said connection operated by the vacuum on valve and regardless of sure in the connection said valve.

' 4. rl`he combination with ahydrocarbon motor having a carbureter andV anintake chamber, of a vacuum operated device for supplying f uel to the carbureter, a pipe from said device to the intake chamber, and a valve in said ipeheld yieldingly in closed position and a apted to be opened by vacuum in the intake chamber said valve being unaffected by the degree of vacuum or pressure in the pipe on the other side of the valve.

5. A pump and 'valve construction comprising a barrel having an intermediate dividing wall, a pump piston operating in the barrel at one side of the wall, anda piston valve operating in the barrel at the other side of said wall.

6. A pump and valve construction comprising a barrel having a through bore, Said barrel having an interior annular groove intermediate its ends, a disk expanded into said groove to form adividing wall for said barrel, and pistons arranged in said barrel on either. side of said wall.

ln testimony whereof l aiix my signature.

JESSE Gr. VINCENT.

the vacuum or preson the other side of a carbureter and an intake i the chamber side of said 

